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  #81 (permalink)  
Old 09-08-2013, 12:55 AM
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Default update on St Marys County encryption - public forum

I have received supportive messages from several of the county commissioners in response to my letter asking for their help in ending full-time encryption of police radio traffic on the county's new P25 trunked system. The commissioners will be holding a public forum this Tuesday evening during which the issue of encryption on the new radio system will be discussed. They have invited those of us who care about this issue to attend the forum and speak. I will definitely be there, and I hope that many of you will join me. Please spread the word to anyone who may be interested.

The forum will be held on Tuesday, September 10 at 6:30 PM at the Northern Senior Center in Charlotte Hall.

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Old 09-08-2013, 10:31 AM
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I started hearing the MSP again on 39.38 yesterday.

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I have not heard anything on 39.38 since the switch. The MSP TAC (car to car) channel is still active from time to time.
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  #83 (permalink)  
Old 09-09-2013, 12:49 PM
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Quote:
Originally Posted by scangeek View Post
I have received supportive messages from several of the county commissioners in response to my letter asking for their help in ending full-time encryption of police radio traffic on the county's new P25 trunked system. The commissioners will be holding a public forum this Tuesday evening during which the issue of encryption on the new radio system will be discussed. They have invited those of us who care about this issue to attend the forum and speak. I will definitely be there, and I hope that many of you will join me. Please spread the word to anyone who may be interested.

The forum will be held on Tuesday, September 10 at 6:30 PM at the Northern Senior Center in Charlotte Hall.

73 de N8TVQ
Aaron
I have posted this on the Southern Maryland Breaking News Facebook page which has 15,840 followers. https://www.facebook.com/pages/South...97581553701680
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  #84 (permalink)  
Old 09-12-2013, 8:32 PM
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..
Did anyone go to the public forum on the police use of full encryption? I work in a county near St. Mary's and, in spite of them being P25, we still can't communicate with them because they aren't sharing the encryption keys. It's really stupid.

It really offends me as a taxpayer since I live in St. Mary's county. Not because I can no longer listen, but because St. Mary's has well over a hundred cops from nearby jurisdictions living in St. Marys. These guys are a FREE resource to St. Mary's county as they travel throughout. To not allow them to communicate is beyond stupid.

It also offends me as a taxpayer, knowing the cost of a P25 Phase II system and knowing the county allegedly bought it to enhance interoperability. What a joke. If the surrounding counties, other state police barracks, the Natural Resource Police, Pax River Police and numerous federal agencies can't communicate with St. Marys within the boundaries of St. Mary's county, then interoperability is a pipe dream.

</rant.> sorry
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Old 09-13-2013, 8:31 AM
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Key management and interoperability do not go hand-in-hand. Routine channels should not be encrypted. Sensitive dispatching can be accomplished either by notebook terminals in vehicles, or by smart phones / pagers. Many Baltimore City officers carry pager-like devices that they can use to receive various messages, review photos, DL info, etc.
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  #86 (permalink)  
Old 09-13-2013, 9:19 PM
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I would suggest that if anyone has concerns about this that they send a letter or email to the County Commissioners. A few seem receptive to going back to the way it used to be. Only used for high risk situations like narcotics or SWAT. If you don't speak up then you will be stuck with it!
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Old 12-02-2014, 5:24 PM
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Anyone have any luck with a BCD436HP on the St. Mary's system?
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Old 12-02-2014, 5:44 PM
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Yes - works fine. Al least on the fire side. I have no idea if the police are encrypting. If they are, you will not hear them.
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Old 12-09-2014, 1:51 PM
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Quote:
Originally Posted by maus92 View Post
Yes - works fine. Al least on the fire side. I have no idea if the police are encrypting. If they are, you will not hear them.
Thanks.

I'm up and running with a BCD436 now.

However, I am getting very choppy audio on P25. I've tried to tweak the P25 threshold, but I cant get enough traffic to really dial it in.

Anyone that's got any threshold values for St. Mary's...would be appreciated..
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  #90 (permalink)  
Old 12-09-2014, 2:00 PM
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Thanks.

I'm up and running with a BCD436 now.

However, I am getting very choppy audio on P25. I've tried to tweak the P25 threshold, but I cant get enough traffic to really dial it in.

Anyone that's got any threshold values for St. Mary's...would be appreciated..
I used no tweaks, except that the antenna I use is a low gain 850Mhz rubber duckie vs. the stock antenna. I was near the main gate at PAX, in the BBQ joint's parking lot, radio sitting in the cup holder. Digital AGC off.
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  #91 (permalink)  
Old 12-09-2014, 2:15 PM
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I used no tweaks, except that the antenna I use is a low gain 850Mhz rubber duckie vs. the stock antenna. I was near the main gate at PAX, in the BBQ joint's parking lot, radio sitting in the cup holder. Digital AGC off.
Thanks again.

I've got the RS 800Mhz antenna. Signal strength seems to be no issue, I have "full bars" on the meter but I do get better RX in "town".. I dunnuo might be multipath..
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Old 12-09-2014, 2:24 PM
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Thanks again.

I've got the RS 800Mhz antenna. Signal strength seems to be no issue, I have "full bars" on the meter but I do get better RX in "town".. I dunnuo might be multipath..
Could be multipath. One of the reasons why I use the 850Mhz antenna rather than the higher gain RS800 is that it is almost unity gain, meaning that it helps to attenuate the signal slightly. I don't use roof mounts either for the same reason (I don't have a need for long range scanning.)
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  #93 (permalink)  
Old 12-09-2014, 3:20 PM
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Quote:
Originally Posted by awg9tech View Post
Thanks.

I'm up and running with a BCD436 now.

However, I am getting very choppy audio on P25. I've tried to tweak the P25 threshold, but I cant get enough traffic to really dial it in.

Anyone that's got any threshold values for St. Mary's...would be appreciated..
It's definitely simulcast distortion. I've been down several times - first time on the day they went live with my PSR500 and PSR800. Parked in the median 7-11 around Mechanicsville. Later that morning actually drove all the way to the Pt. Lookout State Park. As with most of these systems, finding a good station spot, reception was pretty good. Other places and mobile -- not so much.

Been down in the area at other times too - the Wawa at Three Notch ad Rt 5 was a good spot to listen on my x36 but not so much at the Wawa north of that in Charlotte Hall.

As far as I know, St. Mary;s planned to add more towers (believe there were 6 on day 1, planned to have something like 13?). That could make things better (or worse)....

As always, it's about location.... doesn't matter which model scanner you have.

Oh and you probably already know - police (sheriff, MSP, etc.) - even the detention center is (was?) encrypted.
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